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Chemistry Klemm

Unit 1

What is chemistry? the science that deals with all the materials and the changes they go through
What is chemistry often called? the central science
What is the scientific method? 1. Identify the problem 2. Form a hypothesis 3. test it
What is a theory? explains why something happens
What is a law? explains what happens
What are the three systems of measurement? SI, metric, and English
What is mass is SI units? kilograms
What is length in SI units? meters
What is time in SI units? seconds
What is temperature in SI units? Kalvin
What unit is used for the volume of a liquid or gas? milliliters
What unit is used for the volume of a solid? cm^3
What are the three types of zeros? captive, leading, and trailing
How do you find density? mass/volume
How do you find volume? mass/density
How do you find mass? density x volume
What is matter? any physical substance that has mass
What are two ways that matter can be changed? physically and chemically
What two properties does matter have? physical and chemical
What is an element? the building blocks of matter. Can't be broken down
What is a compound? two or more elements mixed together. Compounds can be broken down by going through a chemical change
What is a mixture? any combination of elements and compounds
What are two types of mixtures? homogenous and heterogenous
What is a pure substance? elements of compounds
How can we separate mixtures? distillation and filtration
Created by: caitybaity



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